Home / 1,391,478.60-1,921,161.60-1,068,609.36

Finding the Fourth Proportional to 1,391,478.60, 1,921,161.60 and 1,068,609.36

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Solution

The fourth proportional to 1,391,478.60, 1,921,161.60 and 1,068,609.36 is: 1,475,388.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,478.60 : 1,921,161.60 = 1,068,609.36 : x
  2. Step 2: Convert to fraction form
    1,391,478.60/1,921,161.60 = 1,068,609.36/x
  3. Step 3: Cross multiply
    1,391,478.60x = 1,921,161.60 × 1,068,609.36
  4. Step 4: Simplify right side
    1,391,478.60x = 2,052,971,267,832.58
  5. Step 5: Solve for x
    x = 2,052,971,267,832.58/1,391,478.60
  6. Step 6: Final answer
    x = 1,475,388.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.